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authorEvan Prodromou <evan@controlezvous.ca>2008-06-23 22:52:34 -0400
committerEvan Prodromou <evan@controlezvous.ca>2008-06-23 22:52:34 -0400
commitbe3a44651c47a27907e682a8e4c9e5dd9352a1f6 (patch)
tree040c86ea5030ed65dae6ac807fff12d8da0fdf94 /lib
parent5df185a5ed0040964dc53585c5187ac5004a7834 (diff)
implement rememberme functionality
Added a checkbox on login or register to remember the current user. If the login is successful, this sets a cookie with a random code (saved in the DB). If they come back, and they aren't logged in "normally", we check to see if they have a rememberme cookie. If so, we log them in. However, they can't change settings -- cookie theft is too prevalent. So we mark a session as having a "real" (password or OpenID) login, or not. In settings pages, we check to see if the login is "real", and if not, we redirect to the login page. darcs-hash:20080624025234-34904-ad20001bf35bf41fcb63a0c357fd929aacc55fdb.gz
Diffstat (limited to 'lib')
-rw-r--r--lib/common.php1
-rw-r--r--lib/openid.php72
-rw-r--r--lib/settingsaction.php14
-rw-r--r--lib/util.php102
4 files changed, 137 insertions, 52 deletions
diff --git a/lib/common.php b/lib/common.php
index d2e7e2ed5..18e4ed54a 100644
--- a/lib/common.php
+++ b/lib/common.php
@@ -90,3 +90,4 @@ require_once(INSTALLDIR.'/classes/Remote_profile.php');
require_once(INSTALLDIR.'/classes/Subscription.php');
require_once(INSTALLDIR.'/classes/User.php');
require_once(INSTALLDIR.'/classes/Confirm_address.php');
+require_once(INSTALLDIR.'/classes/Remember_me.php');
diff --git a/lib/openid.php b/lib/openid.php
index 41102457a..11934138f 100644
--- a/lib/openid.php
+++ b/lib/openid.php
@@ -30,7 +30,7 @@ require_once('Auth/OpenID/MySQLStore.php');
define('OPENID_COOKIE_EXPIRY', round(365.25 * 24 * 60 * 60));
define('OPENID_COOKIE_KEY', 'lastusedopenid');
-
+
function oid_store() {
static $store = NULL;
if (!$store) {
@@ -53,21 +53,9 @@ function oid_clear_last() {
}
function oid_set_last($openid_url) {
-
- $path = common_config('site', 'path');
- $server = common_config('site', 'server');
-
- if ($path && ($path != '/')) {
- $cookiepath = '/' . $path . '/';
- } else {
- $cookiepath = '/';
- }
-
- setcookie(OPENID_COOKIE_KEY,
- $openid_url,
- time() + OPENID_COOKIE_EXPIRY,
- $cookiepath,
- $server);
+ common_set_cookie(OPENID_COOKIE_KEY,
+ $openid_url,
+ time() + OPENID_COOKIE_EXPIRY);
}
function oid_get_last() {
@@ -80,7 +68,7 @@ function oid_get_last() {
}
function oid_link_user($id, $canonical, $display) {
-
+
$oid = new User_openid();
$oid->user_id = $id;
$oid->canonical = $canonical;
@@ -92,7 +80,7 @@ function oid_link_user($id, $canonical, $display) {
common_debug('DB error ' . $err->code . ': ' . $err->message, __FILE__);
return false;
}
-
+
return true;
}
@@ -113,13 +101,13 @@ function oid_check_immediate($openid_url, $backto=NULL) {
$backto = common_local_url($action, $args);
}
common_debug('going back to "' . $backto . '"', __FILE__);
-
+
common_ensure_session();
-
+
$_SESSION['openid_immediate_backto'] = $backto;
common_debug('passed-in variable is "' . $backto . '"', __FILE__);
common_debug('session variable is "' . $_SESSION['openid_immediate_backto'] . '"', __FILE__);
-
+
oid_authenticate($openid_url,
'finishimmediate',
true);
@@ -128,23 +116,23 @@ function oid_check_immediate($openid_url, $backto=NULL) {
function oid_authenticate($openid_url, $returnto, $immediate=false) {
$consumer = oid_consumer();
-
+
if (!$consumer) {
common_server_error(_t('Cannot instantiate OpenID consumer object.'));
return false;
}
-
+
common_ensure_session();
-
+
$auth_request = $consumer->begin($openid_url);
-
+
// Handle failure status return values.
if (!$auth_request) {
return _t('Not a valid OpenID.');
} else if (Auth_OpenID::isFailure($auth_request)) {
return _t('OpenID failure: ') . $auth_request->message;
}
-
+
$sreg_request = Auth_OpenID_SRegRequest::build(// Required
array(),
// Optional
@@ -155,14 +143,14 @@ function oid_authenticate($openid_url, $returnto, $immediate=false) {
'timezone',
'postcode',
'country'));
-
+
if ($sreg_request) {
$auth_request->addExtension($sreg_request);
}
-
+
$trust_root = common_local_url('public');
$process_url = common_local_url($returnto);
-
+
if ($auth_request->shouldSendRedirect()) {
$redirect_url = $auth_request->redirectURL($trust_root,
$process_url,
@@ -178,12 +166,12 @@ function oid_authenticate($openid_url, $returnto, $immediate=false) {
$form_id = 'openid_message';
$form_html = $auth_request->formMarkup($trust_root, $process_url,
$immediate, array('id' => $form_id));
-
+
# XXX: This is cheap, but things choke if we don't escape ampersands
# in the HTML attributes
-
+
$form_html = preg_replace('/&/', '&amp;', $form_html);
-
+
// Display an error if the form markup couldn't be generated;
// otherwise, render the HTML.
if (Auth_OpenID::isFailure($form_html)) {
@@ -212,15 +200,15 @@ function _oid_print_instructions() {
# update a user from sreg parameters
function oid_update_user(&$user, &$sreg) {
-
+
$profile = $user->getProfile();
-
+
$orig_profile = clone($profile);
-
+
if ($sreg['fullname'] && strlen($sreg['fullname']) <= 255) {
$profile->fullname = $sreg['fullname'];
}
-
+
if ($sreg['country']) {
if ($sreg['postcode']) {
# XXX: use postcode to get city and region
@@ -230,25 +218,25 @@ function oid_update_user(&$user, &$sreg) {
$profile->location = $sreg['country'];
}
}
-
+
# XXX save language if it's passed
# XXX save timezone if it's passed
-
+
if (!$profile->update($orig_profile)) {
common_server_error(_t('Error saving the profile.'));
return false;
}
-
+
$orig_user = clone($user);
-
+
if ($sreg['email'] && Validate::email($sreg['email'], true)) {
$user->email = $sreg['email'];
}
-
+
if (!$user->update($orig_user)) {
common_server_error(_t('Error saving the user.'));
return false;
}
-
+
return true;
}
diff --git a/lib/settingsaction.php b/lib/settingsaction.php
index fad6abaf1..2a80c0e31 100644
--- a/lib/settingsaction.php
+++ b/lib/settingsaction.php
@@ -26,6 +26,12 @@ class SettingsAction extends Action {
if (!common_logged_in()) {
common_user_error(_t('Not logged in.'));
return;
+ } else if (!common_is_real_login()) {
+ # Cookie theft means that automatic logins can't
+ # change important settings or see private info, and
+ # _all_ our settings are important
+ common_set_returnto($this->self_url());
+ common_redirect(common_local_url('login'));
} else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$this->handle_post();
} else {
@@ -52,8 +58,8 @@ class SettingsAction extends Action {
function settings_menu() {
# action => array('prompt', 'title')
static $menu =
- array('profilesettings' =>
- array('Profile',
+ array('profilesettings' =>
+ array('Profile',
'Change your profile settings'),
'avatar' =>
array('Avatar',
@@ -62,12 +68,12 @@ class SettingsAction extends Action {
array('Password',
'Change your password'),
'openidsettings' =>
- array('OpenID',
+ array('OpenID',
'Add or remove OpenIDs'),
'imsettings' =>
array('IM',
'Updates by instant messenger (IM)'));
-
+
$action = $this->trimmed('action');
common_element_start('ul', array('id' => 'nav_views'));
foreach ($menu as $menuaction => $menudesc) {
diff --git a/lib/util.php b/lib/util.php
index 014577345..2fa8e9f95 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -325,7 +325,7 @@ function common_checkbox($id, $label, $value='true',
common_element_start('p');
$attrs = array('name' => $id,
'type' => 'checkbox',
- 'id' => $id,
+ 'id' => $id,
'value' => $value);
if ($value) {
$attrs['value'] = htmlspecialchars($value);
@@ -432,16 +432,106 @@ function common_set_user($nickname) {
return false;
}
+function commmon_set_cookie($key, $value, $expiration=0) {
+ $path = common_config('site', 'path');
+ $server = common_config('site', 'server');
+
+ if ($path && ($path != '/')) {
+ $cookiepath = '/' . $path . '/';
+ } else {
+ $cookiepath = '/';
+ }
+ return setcookie($key,
+ $value,
+ $expiration,
+ $cookiepath,
+ $server);
+}
+
+define('REMEMBERME', 'rememberme');
+define('REMEMBERME_EXPIRY', round(30 * 24 * 60 * 60));
+
+function common_rememberme() {
+ $user = common_current_user();
+ if (!$user) {
+ return false;
+ }
+ $rm = new Remember_me();
+ $rm->code = common_good_rand(16);
+ $rm->user = $user->id();
+ if (!$rm->insert) {
+ common_log_db_error($rm, 'INSERT', __FILE__);
+ return false;
+ }
+ common_set_cookie(REMEMBERME,
+ $rm->user . ':' . $rm->code,
+ time() + REMEMBERME_EXPIRY);
+}
+
+function common_remembered_user() {
+ $user = NULL;
+ # Try to remember
+ $packed = $_COOKIE[REMEMBERME];
+ if ($packed) {
+ list($id, $code) = explode(':', $packed);
+ if ($id && $code) {
+ $rm = Remember_me::staticGet($code);
+ if ($rm && $rm->id == $id) {
+ $user = User::staticGet($rm->id);
+ if ($user) {
+ # successful!
+ $result = $rm->delete();
+ if (!$result) {
+ common_log_db_error($rm, 'DELETE', __FILE__);
+ $user = NULL;
+ } else {
+ common_set_user($user);
+ common_real_login(false);
+ common_rememberme();
+ }
+ }
+ }
+ }
+ }
+ return $user;
+}
+
+# must be called with a valid user!
+
+function common_forgetme() {
+ common_set_cookie(REMEMBERME, '', 0);
+}
+
# who is the current user?
function common_current_user() {
- common_ensure_session();
- $id = $_SESSION['userid'];
- if ($id) {
- $user = User::staticGet($id);
+
+ if (common_have_session()) {
+ $id = $_SESSION['userid'];
+ if ($id) {
+ # note: this should cache
+ $user = User::staticGet($id);
+ return $user;
+ }
}
+
+ # that didn't work; try to remember
+ $user = common_remembered_user();
return $user;
}
+# Logins that are 'remembered' aren't 'real' -- they're subject to
+# cookie-stealing. So, we don't let them do certain things. New reg,
+# OpenID, and password logins _are_ real.
+
+function common_real_login($real=true) {
+ common_ensure_session();
+ $_SESSION['real_login'] = $real;
+}
+
+function common_is_real_login() {
+ return common_logged_in() && $_SESSION['real_login'];
+}
+
# get canonical version of nickname for comparison
function common_canonical_nickname($nickname) {
# XXX: UTF-8 canonicalization (like combining chars)
@@ -944,7 +1034,7 @@ function common_user_uri(&$user) {
}
function common_notice_uri(&$notice) {
- return common_local_url('shownotice',
+ return common_local_url('shownotice',
array('notice' => $notice->id));
}